New to RVs. I have a new Kingsport and have 1 weekend trip on it. Was getting it ready for a Labor Day weekend trip and switched on the water pump and had fresh water coming from under the sink. Dealer is telling me it'll be mid-Nov. before I can bring it in for warranty work (after research I'm finding this is common) so I'm going to attempt a repair on my own. While fixing the leak I'd like to install inline cutoff valves on the out flow lines from the pump but can't find a reference to the line diameter? Can anyone help?